// moment.js
// version : 1.6.2
// author : Tim Wood
// license : MIT
// momentjs.com

(function (Date, undefined) {

  var moment,
      VERSION = "1.6.2",
      round = Math.round, i,
      // internal storage for language config files
      languages = {},
      currentLanguage = 'en',

      // check for nodeJS
      hasModule = (typeof module !== 'undefined'),

      // parameters to check for on the lang config
      langConfigProperties = 'months|monthsShort|monthsParse|weekdays|weekdaysShort|longDateFormat|calendar|relativeTime|ordinal|meridiem'.split('|'),

      // ASP.NET json date format regex
      aspNetJsonRegex = /^\/?Date\((\-?\d+)/i,

      // format tokens
      formattingTokens = /(\[[^\[]*\])|(\\)?(Mo|MM?M?M?|Do|DDDo|DD?D?D?|dddd?|do?|w[o|w]?|YYYY|YY|a|A|hh?|HH?|mm?|ss?|SS?S?|zz?|ZZ?|LT|LL?L?L?)/g,

      // parsing tokens
      parseMultipleFormatChunker = /([0-9a-zA-Z\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+)/gi,

      // parsing token regexes
      parseTokenOneOrTwoDigits = /\d\d?/, // 0 - 99
      parseTokenOneToThreeDigits = /\d{1,3}/, // 0 - 999
      parseTokenThreeDigits = /\d{3}/, // 000 - 999
      parseTokenFourDigits = /\d{4}/, // 0000 - 9999
      parseTokenWord = /[0-9a-z\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+/i, // any word characters or numbers
      parseTokenTimezone = /Z|[\+\-]\d\d:?\d\d/i, // +00:00 -00:00 +0000 -0000 or Z
      parseTokenT = /T/i, // T (ISO seperator)

      // preliminary iso regex
      // 0000-00-00 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000
      isoRegex = /^\s*\d{4}-\d\d-\d\d(T(\d\d(:\d\d(:\d\d(\.\d\d?\d?)?)?)?)?([\+\-]\d\d:?\d\d)?)?/,
      isoFormat = 'YYYY-MM-DDTHH:mm:ssZ',

      // iso time formats and regexes
      isoTimes = [
        ['HH:mm:ss.S', /T\d\d:\d\d:\d\d\.\d{1,3}/],
        ['HH:mm:ss', /T\d\d:\d\d:\d\d/],
        ['HH:mm', /T\d\d:\d\d/],
        ['HH', /T\d\d/]
      ],

      // timezone chunker "+10:00" > ["10", "00"] or "-1530" > ["-15", "30"]
      parseTimezoneChunker = /([\+\-]|\d\d)/gi,

      // getter and setter names
      proxyGettersAndSetters = 'Month|Date|Hours|Minutes|Seconds|Milliseconds'.split('|'),
      unitMillisecondFactors = {
        'Milliseconds': 1,
        'Seconds': 1e3,
        'Minutes': 6e4,
        'Hours': 36e5,
        'Days': 864e5,
        'Months': 2592e6,
        'Years': 31536e6
      };

  // Moment prototype object
  function Moment(date, isUTC) {
    this._d = date;
    this._isUTC = !!isUTC;
  }

  function absRound(number) {
    if (number < 0) {
      return Math.ceil(number);
    } else {
      return Math.floor(number);
    }
  }

  // Duration Constructor
  function Duration(duration) {
    var data = this._data = {},
        years = duration.years || duration.y || 0,
        months = duration.months || duration.M || 0,
        weeks = duration.weeks || duration.w || 0,
        days = duration.days || duration.d || 0,
        hours = duration.hours || duration.h || 0,
        minutes = duration.minutes || duration.m || 0,
        seconds = duration.seconds || duration.s || 0,
        milliseconds = duration.milliseconds || duration.ms || 0;

    // representation for dateAddRemove
    this._milliseconds = milliseconds +
      seconds * 1e3 + // 1000
      minutes * 6e4 + // 1000 * 60
      hours * 36e5; // 1000 * 60 * 60
    // Because of dateAddRemove treats 24 hours as different from a
    // day when working around DST, we need to store them separately
    this._days = days +
      weeks * 7;
    // It is impossible translate months into days without knowing
    // which months you are are talking about, so we have to store
    // it separately.
    this._months = months +
      years * 12;

    // The following code bubbles up values, see the tests for
    // examples of what that means.
    data.milliseconds = milliseconds % 1000;
    seconds += absRound(milliseconds / 1000);

    data.seconds = seconds % 60;
    minutes += absRound(seconds / 60);

    data.minutes = minutes % 60;
    hours += absRound(minutes / 60);

    data.hours = hours % 24;
    days += absRound(hours / 24);

    days += weeks * 7;
    data.days = days % 30;

    months += absRound(days / 30);

    data.months = months % 12;
    years += absRound(months / 12);

    data.years = years;
  }

  // left zero fill a number
  // see http://jsperf.com/left-zero-filling for performance comparison
  function leftZeroFill(number, targetLength) {
    var output = number + '';
    while (output.length < targetLength) {
      output = '0' + output;
    }
    return output;
  }

  // helper function for _.addTime and _.subtractTime
  function addOrSubtractDurationFromMoment(mom, duration, isAdding) {
    var ms = duration._milliseconds,
        d = duration._days,
        M = duration._months,
        currentDate;

    if (ms) {
      mom._d.setTime(+mom + ms * isAdding);
    }
    if (d) {
      mom.date(mom.date() + d * isAdding);
    }
    if (M) {
      currentDate = mom.date();
      mom.date(1)
        .month(mom.month() + M * isAdding)
        .date(Math.min(currentDate, mom.daysInMonth()));
    }
  }

  // check if is an array
  function isArray(input) {
    return Object.prototype.toString.call(input) === '[object Array]';
  }

  // convert an array to a date.
  // the array should mirror the parameters below
  // note: all values past the year are optional and will default to the lowest possible value.
  // [year, month, day , hour, minute, second, millisecond]
  function dateFromArray(input) {
    return new Date(input[0], input[1] || 0, input[2] || 1, input[3] || 0, input[4] || 0, input[5] || 0, input[6] || 0);
  }

  // format date using native date object
  function formatMoment(m, inputString) {
    var currentMonth = m.month(),
        currentDate = m.date(),
        currentYear = m.year(),
        currentDay = m.day(),
        currentHours = m.hours(),
        currentMinutes = m.minutes(),
        currentSeconds = m.seconds(),
        currentMilliseconds = m.milliseconds(),
        currentZone = -m.zone(),
        ordinal = moment.ordinal,
        meridiem = moment.meridiem;
    // check if the character is a format
    // return formatted string or non string.
    //
    // uses switch/case instead of an object of named functions (like http://phpjs.org/functions/date:380)
    // for minification and performance
    // see http://jsperf.com/object-of-functions-vs-switch for performance comparison
    function replaceFunction(input) {
      // create a couple variables to be used later inside one of the cases.
      var a, b;
      switch (input) {
        // MONTH
        case 'M' :
          return currentMonth + 1;
        case 'Mo' :
          return (currentMonth + 1) + ordinal(currentMonth + 1);
        case 'MM' :
          return leftZeroFill(currentMonth + 1, 2);
        case 'MMM' :
          return moment.monthsShort[currentMonth];
        case 'MMMM' :
          return moment.months[currentMonth];
        // DAY OF MONTH
        case 'D' :
          return currentDate;
        case 'Do' :
          return currentDate + ordinal(currentDate);
        case 'DD' :
          return leftZeroFill(currentDate, 2);
        // DAY OF YEAR
        case 'DDD' :
          a = new Date(currentYear, currentMonth, currentDate);
          b = new Date(currentYear, 0, 1);
          return ~~(((a - b) / 864e5) + 1.5);
        case 'DDDo' :
          a = replaceFunction('DDD');
          return a + ordinal(a);
        case 'DDDD' :
          return leftZeroFill(replaceFunction('DDD'), 3);
        // WEEKDAY
        case 'd' :
          return currentDay;
        case 'do' :
          return currentDay + ordinal(currentDay);
        case 'ddd' :
          return moment.weekdaysShort[currentDay];
        case 'dddd' :
          return moment.weekdays[currentDay];
        // WEEK OF YEAR
        case 'w' :
          a = new Date(currentYear, currentMonth, currentDate - currentDay + 5);
          b = new Date(a.getFullYear(), 0, 4);
          return ~~((a - b) / 864e5 / 7 + 1.5);
        case 'wo' :
          a = replaceFunction('w');
          return a + ordinal(a);
        case 'ww' :
          return leftZeroFill(replaceFunction('w'), 2);
        // YEAR
        case 'YY' :
          return leftZeroFill(currentYear % 100, 2);
        case 'YYYY' :
          return currentYear;
        // AM / PM
        case 'a' :
          return meridiem ? meridiem(currentHours, currentMinutes, false) : (currentHours > 11 ? 'pm' : 'am');
        case 'A' :
          return meridiem ? meridiem(currentHours, currentMinutes, true) : (currentHours > 11 ? 'PM' : 'AM');
        // 24 HOUR
        case 'H' :
          return currentHours;
        case 'HH' :
          return leftZeroFill(currentHours, 2);
        // 12 HOUR
        case 'h' :
          return currentHours % 12 || 12;
        case 'hh' :
          return leftZeroFill(currentHours % 12 || 12, 2);
        // MINUTE
        case 'm' :
          return currentMinutes;
        case 'mm' :
          return leftZeroFill(currentMinutes, 2);
        // SECOND
        case 's' :
          return currentSeconds;
        case 'ss' :
          return leftZeroFill(currentSeconds, 2);
        // MILLISECONDS
        case 'S' :
          return ~~(currentMilliseconds / 100);
        case 'SS' :
          return leftZeroFill(~~(currentMilliseconds / 10), 2);
        case 'SSS' :
          return leftZeroFill(currentMilliseconds, 3);
        // TIMEZONE
        case 'Z' :
          return (currentZone < 0 ? '-' : '+') + leftZeroFill(~~(Math.abs(currentZone) / 60), 2) + ':' + leftZeroFill(~~(Math.abs(currentZone) % 60), 2);
        case 'ZZ' :
          return (currentZone < 0 ? '-' : '+') + leftZeroFill(~~(10 * Math.abs(currentZone) / 6), 4);
        // LONG DATES
        case 'L' :
        case 'LL' :
        case 'LLL' :
        case 'LLLL' :
        case 'LT' :
          return formatMoment(m, moment.longDateFormat[input]);
        // DEFAULT
        default :
          return input.replace(/(^\[)|(\\)|\]$/g, "");
      }
    }

    return inputString.replace(formattingTokens, replaceFunction);
  }

  // get the regex to find the next token
  function getParseRegexForToken(token) {
    switch (token) {
      case 'DDDD':
        return parseTokenThreeDigits;
      case 'YYYY':
        return parseTokenFourDigits;
      case 'S':
      case 'SS':
      case 'SSS':
      case 'DDD':
        return parseTokenOneToThreeDigits;
      case 'MMM':
      case 'MMMM':
      case 'ddd':
      case 'dddd':
      case 'a':
      case 'A':
        return parseTokenWord;
      case 'Z':
      case 'ZZ':
        return parseTokenTimezone;
      case 'T':
        return parseTokenT;
      case 'MM':
      case 'DD':
      case 'dd':
      case 'YY':
      case 'HH':
      case 'hh':
      case 'mm':
      case 'ss':
      case 'M':
      case 'D':
      case 'd':
      case 'H':
      case 'h':
      case 'm':
      case 's':
        return parseTokenOneOrTwoDigits;
      default :
        return new RegExp(token.replace('\\', ''));
    }
  }

  // function to convert string input to date
  function addTimeToArrayFromToken(token, input, datePartArray, config) {
    var a;
    //console.log('addTime', format, input);
    switch (token) {
      // MONTH
      case 'M' : // fall through to MM
      case 'MM' :
        datePartArray[1] = (input == null) ? 0 : ~~input - 1;
        break;
      case 'MMM' : // fall through to MMMM
      case 'MMMM' :
        for (a = 0; a < 12; a++) {
          if (moment.monthsParse[a].test(input)) {
            datePartArray[1] = a;
            break;
          }
        }
        break;
      // DAY OF MONTH
      case 'D' : // fall through to DDDD
      case 'DD' : // fall through to DDDD
      case 'DDD' : // fall through to DDDD
      case 'DDDD' :
        datePartArray[2] = ~~input;
        break;
      // YEAR
      case 'YY' :
        input = ~~input;
        datePartArray[0] = input + (input > 70 ? 1900 : 2000);
        break;
      case 'YYYY' :
        datePartArray[0] = ~~Math.abs(input);
        break;
      // AM / PM
      case 'a' : // fall through to A
      case 'A' :
        config.isPm = ((input + '').toLowerCase() === 'pm');
        break;
      // 24 HOUR
      case 'H' : // fall through to hh
      case 'HH' : // fall through to hh
      case 'h' : // fall through to hh
      case 'hh' :
        datePartArray[3] = ~~input;
        break;
      // MINUTE
      case 'm' : // fall through to mm
      case 'mm' :
        datePartArray[4] = ~~input;
        break;
      // SECOND
      case 's' : // fall through to ss
      case 'ss' :
        datePartArray[5] = ~~input;
        break;
      // MILLISECOND
      case 'S' :
      case 'SS' :
      case 'SSS' :
        datePartArray[6] = ~~(('0.' + input) * 1000);
        break;
      // TIMEZONE
      case 'Z' : // fall through to ZZ
      case 'ZZ' :
        config.isUTC = true;
        a = (input + '').match(parseTimezoneChunker);
        if (a && a[1]) {
          config.tzh = ~~a[1];
        }
        if (a && a[2]) {
          config.tzm = ~~a[2];
        }
        // reverse offsets
        if (a && a[0] === '+') {
          config.tzh = -config.tzh;
          config.tzm = -config.tzm;
        }
        break;
    }
  }

  // date from string and format string
  function makeDateFromStringAndFormat(string, format) {
    var datePartArray = [0, 0, 1, 0, 0, 0, 0],
        config = {
          tzh: 0, // timezone hour offset
          tzm: 0  // timezone minute offset
        },
        tokens = format.match(formattingTokens),
        i, parsedInput;

    for (i = 0; i < tokens.length; i++) {
      parsedInput = (getParseRegexForToken(tokens[i]).exec(string) || [])[0];
      string = string.replace(getParseRegexForToken(tokens[i]), '');
      addTimeToArrayFromToken(tokens[i], parsedInput, datePartArray, config);
    }
    // handle am pm
    if (config.isPm && datePartArray[3] < 12) {
      datePartArray[3] += 12;
    }
    // if is 12 am, change hours to 0
    if (config.isPm === false && datePartArray[3] === 12) {
      datePartArray[3] = 0;
    }
    // handle timezone
    datePartArray[3] += config.tzh;
    datePartArray[4] += config.tzm;
    // return
    return config.isUTC ? new Date(Date.UTC.apply({}, datePartArray)) : dateFromArray(datePartArray);
  }

  // compare two arrays, return the number of differences
  function compareArrays(array1, array2) {
    var len = Math.min(array1.length, array2.length),
        lengthDiff = Math.abs(array1.length - array2.length),
        diffs = 0,
        i;
    for (i = 0; i < len; i++) {
      if (~~array1[i] !== ~~array2[i]) {
        diffs++;
      }
    }
    return diffs + lengthDiff;
  }

  // date from string and array of format strings
  function makeDateFromStringAndArray(string, formats) {
    var output,
        inputParts = string.match(parseMultipleFormatChunker) || [],
        formattedInputParts,
        scoreToBeat = 99,
        i,
        currentDate,
        currentScore;
    for (i = 0; i < formats.length; i++) {
      currentDate = makeDateFromStringAndFormat(string, formats[i]);
      formattedInputParts = formatMoment(new Moment(currentDate), formats[i]).match(parseMultipleFormatChunker) || [];
      currentScore = compareArrays(inputParts, formattedInputParts);
      if (currentScore < scoreToBeat) {
        scoreToBeat = currentScore;
        output = currentDate;
      }
    }
    return output;
  }

  // date from iso format
  function makeDateFromString(string) {
    var format = 'YYYY-MM-DDT',
        i;
    if (isoRegex.exec(string)) {
      for (i = 0; i < 4; i++) {
        if (isoTimes[i][1].exec(string)) {
          format += isoTimes[i][0];
          break;
        }
      }
      return parseTokenTimezone.exec(string) ?
        makeDateFromStringAndFormat(string, format + ' Z') :
        makeDateFromStringAndFormat(string, format);
    }
    return new Date(string);
  }

  // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
  function substituteTimeAgo(string, number, withoutSuffix, isFuture) {
    var rt = moment.relativeTime[string];
    return (typeof rt === 'function') ?
      rt(number || 1, !!withoutSuffix, string, isFuture) :
      rt.replace(/%d/i, number || 1);
  }

  function relativeTime(milliseconds, withoutSuffix) {
    var seconds = round(Math.abs(milliseconds) / 1000),
        minutes = round(seconds / 60),
        hours = round(minutes / 60),
        days = round(hours / 24),
        years = round(days / 365),
        args = seconds < 45 && ['s', seconds] ||
          minutes === 1 && ['m'] ||
          minutes < 45 && ['mm', minutes] ||
          hours === 1 && ['h'] ||
          hours < 22 && ['hh', hours] ||
          days === 1 && ['d'] ||
          days <= 25 && ['dd', days] ||
          days <= 45 && ['M'] ||
          days < 345 && ['MM', round(days / 30)] ||
          years === 1 && ['y'] || ['yy', years];
    args[2] = withoutSuffix;
    args[3] = milliseconds > 0;
    return substituteTimeAgo.apply({}, args);
  }

  moment = function (input, format) {
    if (input === null || input === '') {
      return null;
    }
    var date,
        matched,
        isUTC;
    // parse Moment object
    if (moment.isMoment(input)) {
      date = new Date(+input._d);
      isUTC = input._isUTC;
      // parse string and format
    } else if (format) {
      if (isArray(format)) {
        date = makeDateFromStringAndArray(input, format);
      } else {
        date = makeDateFromStringAndFormat(input, format);
      }
      // evaluate it as a JSON-encoded date
    } else {
      matched = aspNetJsonRegex.exec(input);
      date = input === undefined ? new Date() :
        matched ? new Date(+matched[1]) :
            input instanceof Date ? input :
          isArray(input) ? dateFromArray(input) :
              typeof input === 'string' ? makeDateFromString(input) :
            new Date(input);
    }
    return new Moment(date, isUTC);
  };

  // creating with utc
  moment.utc = function (input, format) {
    if (isArray(input)) {
      return new Moment(new Date(Date.UTC.apply({}, input)), true);
    }
    return (format && input) ?
      moment(input + ' +0000', format + ' Z').utc() :
      moment(input && !parseTokenTimezone.exec(input) ? input + '+0000' : input).utc();
  };

  // creating with unix timestamp (in seconds)
  moment.unix = function (input) {
    return moment(input * 1000);
  };

  // duration
  moment.duration = function (input, key) {
    var isDuration = moment.isDuration(input),
        isNumber = (typeof input === 'number'),
        duration = (isDuration ? input._data : (isNumber ? {} : input));

    if (isNumber) {
      if (key) {
        duration[key] = input;
      } else {
        duration.milliseconds = input;
      }
    }

    return new Duration(duration);
  };

  // humanizeDuration
  // This method is deprecated in favor of the new Duration object.  Please
  // see the moment.duration method.
  moment.humanizeDuration = function (num, type, withSuffix) {
    return moment.duration(num, type === true ? null : type).humanize(type === true ? true : withSuffix);
  };

  // version number
  moment.version = VERSION;

  // default format
  moment.defaultFormat = isoFormat;

  // language switching and caching
  moment.lang = function (key, values) {
    var i, req,
        parse = [];
    if (!key) {
      return currentLanguage;
    }
    if (values) {
      for (i = 0; i < 12; i++) {
        parse[i] = new RegExp('^' + values.months[i] + '|^' + values.monthsShort[i].replace('.', ''), 'i');
      }
      values.monthsParse = values.monthsParse || parse;
      languages[key] = values;
    }
    if (languages[key]) {
      for (i = 0; i < langConfigProperties.length; i++) {
        moment[langConfigProperties[i]] = languages[key][langConfigProperties[i]] ||
          languages.en[langConfigProperties[i]];
      }
      currentLanguage = key;
    } else {
      if (hasModule) {
        req = require('./lang/' + key);
        moment.lang(key, req);
      }
    }
  };

  // set default language
  moment.lang('en', {
    months: "January_February_March_April_May_June_July_August_September_October_November_December".split("_"),
    monthsShort: "Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec".split("_"),
    weekdays: "Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday".split("_"),
    weekdaysShort: "Sun_Mon_Tue_Wed_Thu_Fri_Sat".split("_"),
    longDateFormat: {
      LT: "h:mm A",
      L: "MM/DD/YYYY",
      LL: "MMMM D YYYY",
      LLL: "MMMM D YYYY LT",
      LLLL: "dddd, MMMM D YYYY LT"
    },
    meridiem: false,
    calendar: {
      sameDay: '[Today at] LT',
      nextDay: '[Tomorrow at] LT',
      nextWeek: 'dddd [at] LT',
      lastDay: '[Yesterday at] LT',
      lastWeek: '[last] dddd [at] LT',
      sameElse: 'L'
    },
    relativeTime: {
      future: "in %s",
      past: "%s ago",
      s: "a few seconds",
      m: "a minute",
      mm: "%d minutes",
      h: "an hour",
      hh: "%d hours",
      d: "a day",
      dd: "%d days",
      M: "a month",
      MM: "%d months",
      y: "a year",
      yy: "%d years"
    },
    ordinal: function (number) {
      var b = number % 10;
      return (~~(number % 100 / 10) === 1) ? 'th' :
        (b === 1) ? 'st' :
          (b === 2) ? 'nd' :
            (b === 3) ? 'rd' : 'th';
    }
  });

  // compare moment object
  moment.isMoment = function (obj) {
    return obj instanceof Moment;
  };

  // for typechecking Duration objects
  moment.isDuration = function (obj) {
    return obj instanceof Duration;
  };

  // shortcut for prototype
  moment.fn = Moment.prototype = {

    clone: function () {
      return moment(this);
    },

    valueOf: function () {
      return +this._d;
    },

    unix: function () {
      return Math.floor(+this._d / 1000);
    },

    toString: function () {
      return this._d.toString();
    },

    toDate: function () {
      return this._d;
    },

    utc: function () {
      this._isUTC = true;
      return this;
    },

    local: function () {
      this._isUTC = false;
      return this;
    },

    format: function (inputString) {
      return formatMoment(this, inputString ? inputString : moment.defaultFormat);
    },

    add: function (input, val) {
      var dur = val ? moment.duration(+val, input) : moment.duration(input);
      addOrSubtractDurationFromMoment(this, dur, 1);
      return this;
    },

    subtract: function (input, val) {
      var dur = val ? moment.duration(+val, input) : moment.duration(input);
      addOrSubtractDurationFromMoment(this, dur, -1);
      return this;
    },

    diff: function (input, val, asFloat) {
      var inputMoment = this._isUTC ? moment(input).utc() : moment(input).local(),
          zoneDiff = (this.zone() - inputMoment.zone()) * 6e4,
          diff = this._d - inputMoment._d - zoneDiff,
          year = this.year() - inputMoment.year(),
          month = this.month() - inputMoment.month(),
          date = this.date() - inputMoment.date(),
          output;
      if (val === 'months') {
        output = year * 12 + month + date / 30;
      } else if (val === 'years') {
        output = year + (month + date / 30) / 12;
      } else {
        output = val === 'seconds' ? diff / 1e3 : // 1000
            val === 'minutes' ? diff / 6e4 : // 1000 * 60
            val === 'hours' ? diff / 36e5 : // 1000 * 60 * 60
            val === 'days' ? diff / 864e5 : // 1000 * 60 * 60 * 24
            val === 'weeks' ? diff / 6048e5 : // 1000 * 60 * 60 * 24 * 7
          diff;
      }
      return asFloat ? output : round(output);
    },

    from: function (time, withoutSuffix) {
      return moment.duration(this.diff(time)).humanize(!withoutSuffix);
    },

    fromNow: function (withoutSuffix) {
      return this.from(moment(), withoutSuffix);
    },

    calendar: function () {
      var diff = this.diff(moment().sod(), 'days', true),
          calendar = moment.calendar,
          allElse = calendar.sameElse,
          format = diff < -6 ? allElse :
              diff < -1 ? calendar.lastWeek :
              diff < 0 ? calendar.lastDay :
              diff < 1 ? calendar.sameDay :
              diff < 2 ? calendar.nextDay :
              diff < 7 ? calendar.nextWeek : allElse;
      return this.format(typeof format === 'function' ? format.apply(this) : format);
    },

    isLeapYear: function () {
      var year = this.year();
      return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
    },

    isDST: function () {
      return (this.zone() < moment([this.year()]).zone() ||
        this.zone() < moment([this.year(), 5]).zone());
    },

    day: function (input) {
      var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
      return input == null ? day :
        this.add({ d: input - day });
    },

    sod: function () {
      return moment(this)
        .hours(0)
        .minutes(0)
        .seconds(0)
        .milliseconds(0);
    },

    eod: function () {
      // end of day = start of day plus 1 day, minus 1 millisecond
      return this.sod().add({
        d: 1,
        ms: -1
      });
    },

    zone: function () {
      return this._isUTC ? 0 : this._d.getTimezoneOffset();
    },

    daysInMonth: function () {
      return moment(this).month(this.month() + 1).date(0).date();
    }
  };

  // helper for adding shortcuts
  function makeGetterAndSetter(name, key) {
    moment.fn[name] = function (input) {
      var utc = this._isUTC ? 'UTC' : '';
      if (input != null) {
        this._d['set' + utc + key](input);
        return this;
      } else {
        return this._d['get' + utc + key]();
      }
    };
  }

  // loop through and add shortcuts (Month, Date, Hours, Minutes, Seconds, Milliseconds)
  for (i = 0; i < proxyGettersAndSetters.length; i++) {
    makeGetterAndSetter(proxyGettersAndSetters[i].toLowerCase(), proxyGettersAndSetters[i]);
  }

  // add shortcut for year (uses different syntax than the getter/setter 'year' == 'FullYear')
  makeGetterAndSetter('year', 'FullYear');

  moment.duration.fn = Duration.prototype = {
    weeks: function () {
      return absRound(this.days() / 7);
    },

    valueOf: function () {
      return this._milliseconds +
        this._days * 864e5 +
        this._months * 2592e6;
    },

    humanize: function (withSuffix) {
      var difference = +this,
          rel = moment.relativeTime,
          output = relativeTime(difference, !withSuffix);

      if (withSuffix) {
        output = (difference <= 0 ? rel.past : rel.future).replace(/%s/i, output);
      }

      return output;
    }
  };

  function makeDurationGetter(name) {
    moment.duration.fn[name] = function () {
      return this._data[name];
    };
  }

  function makeDurationAsGetter(name, factor) {
    moment.duration.fn['as' + name] = function () {
      return +this / factor;
    };
  }

  for (i in unitMillisecondFactors) {
    if (unitMillisecondFactors.hasOwnProperty(i)) {
      makeDurationAsGetter(i, unitMillisecondFactors[i]);
      makeDurationGetter(i.toLowerCase());
    }
  }

  makeDurationAsGetter('Weeks', 6048e5);

  // CommonJS module is defined
  if (hasModule) {
    module.exports = moment;
  }
  /*global ender:false */
  if (typeof window !== 'undefined' && typeof ender === 'undefined') {
    window.moment = moment;
  }
  /*global define:false */
  if (typeof define === "function" && define.amd) {
    define("moment", [], function () {
      return moment;
    });
  }
})(Date);
